Maxon Motors in Switzerland is producing tiny and powerful motors e.g. for the Mars-Rovers (I think still with encoders). The motors and controllers cost a fortune because this is the best-available stuff. Maybe Maxon could be interested? Smaller/lighter/more reliable motors without sensors for the...

Lebowski great tech! You deserve the :wizzard: label for sure! I would recommend you form a company. Make your technology the company's IP. Then approach the big guns of TI. This is a chip level solution with associated algorithms. If TI bites, they will buy out your company for the IP. Typical tec...

Just a small update on this project. I works. Really well. Can run a motor from standstill as if it had a resolver / hall sensors and at what I call max torque (the point where the stator electromagnets have the same strength as the permanent magnets). But completely sensorless. Just 3 wires to the ...

The typical car here like the Citroen C3 weighs 1000 kg, so 2200 pounds. The C3 has a claimed 0-100kmh of around 15 seconds for the 82hp version. Which is more than fast enough for me, I care about being able to reach 100 :? , not how long it takes to get there. Top speed is 160 kmh (100mph), so no ...

Newer small cars with direct injection engines are very quiet. You'd be surprised. I test drove them all. DI motors are pretty nice. ( except for that whole, cleaning the intake valves part out every ~50,000 miles ) Yep, and this business with the valves, for me at least, is why I would not buy one...

Ive been doing a bit more research and have been reading up about all the issues with GDI and carbon deposits on intake valves. For Citroen and Skoda this means the bigger HP engines are out, including all versions with automatic. Kind of a bummer :? I tried the Honda Jazz (as the fit is called here...

I am also looking at getting a new small car, budget around 15k in US dollar. I am considering the Suzuki Celerio, very economical at a real life 60mpg (my mam has one, hope I did the conversion to mpg correct). For me it is kinda small though, so I added the Skoda Fabia and the Citroen C3 to the li...

Amazing work! So how does it work with power? Does it take a "break" from driving the motor now and then to run the algorithm, or does it work continuously while powering the motor? (Not that I think it matters much for the user. I am mostly just curious and amazed!) For now my lips are sealed... a...

I mean, it doesn't really matter what circuit you use, as long as the battery voltage is mapped to 2.5 to 5 V at the controller IC input. The mapping must be linear, and all possible battery voltages (so between completely full and empty) must fall in this range... I like the isolated amp by the way...

For what I know it should work at higher phase current as well, but it will put some demands on the electronics (especially the current sensors). I think it'll be a case of just trying and seeing when and why it fails, and then fix that. At the moment though it will go to the max of my power supply,...

I wish I knew so much about physics, electronics etc. to push things further than global companies like Texas Instruments are capable. Just fyi: I stumbled across a video explaining the TI Instaspin technology, I think I haven't seen it on the forum yet: https://youtu.be/szgVUfyX8JM I looked at thi...

I would love to see this development spread to every available controller as an option. However, I must be realistic when I state that any new development that is useful will be reverse-engineered and copied. So...your first controller model must be the most profitable to you. 48V/52V providing 60A...

1) 4.95V should be enough i its very stable, the chip automatically resets when it drops to 4.5V or so... 2) When the processor starts the first thing it does is look at the setup pin and go either setup or motor mode. After that there is no way to change the mode anymore. The processor starts: this...

Trying it out with my small (I think 4025) RC motor. With phase current and the computer showing the real time (rotor position) phase info. Note how the phase info is continuous and not just 6-stepping. DIIBAARAKss I added some AGC's inside the code to make it easier to try different motors. I tried...

I still haven't finished building the old version of the controller...and now you have started the ideal version of what I'd like to have on the trike. :) Well, I'll finish the ones I have and see how they're doing, then when you finish this design I'll see if there's any way to "patch in" the new ...

Hi Arber, Just to answer your questions: 1) yes it can work with only 1 throttle, in the setup menu you can specify only to use throttle 1 and not throttle 2. 2) I would indeed pull the reset on a fault detection, pull the reset (MCLR) to ground. This puts the chip in reset, a consequence of which b...

cleaned up my table to show the (simple) wiring more clearly. Also strapped it in to try to prevent any motor movement and to measure the pulling power (this is with 15A amplitude phase current again). UsajWB_Yy8E At the end of the video I mention I went all the way to the limit of my power supply, ...

Now I added the capability to run with a (15A) phase current. I set a fixed phase current as there is no throttle connected yet. In the video you can hear me flipping on the 15V/5V power supply (and thus cold-starting the processor). Note how the motor always starts and pulls in the same direction (...

As a main on/off switch I would just completely disconnect the battery. If you just want to shut down the low voltage part, I would interrupt both the high voltage going into the 15V DCDC and also the line where it measures the battery voltage (else it will supply a few mA via this resistor to the 5...